WO1989000537A1 - Systeme generateur de pression pour un recipient jetable - Google Patents

Systeme generateur de pression pour un recipient jetable Download PDF

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Publication number
WO1989000537A1
WO1989000537A1 PCT/US1988/002356 US8802356W WO8900537A1 WO 1989000537 A1 WO1989000537 A1 WO 1989000537A1 US 8802356 W US8802356 W US 8802356W WO 8900537 A1 WO8900537 A1 WO 8900537A1
Authority
WO
WIPO (PCT)
Prior art keywords
compartment
container
gas pressure
gas
pressure
Prior art date
Application number
PCT/US1988/002356
Other languages
English (en)
Inventor
Paul H. Lefevre
Original Assignee
Adolph Coors Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adolph Coors Company filed Critical Adolph Coors Company
Publication of WO1989000537A1 publication Critical patent/WO1989000537A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/60—Contents and propellant separated
    • B65D83/62—Contents and propellant separated by membrane, bag, or the like
    • B65D83/625—Contents and propellant separated by membrane, bag, or the like the propellant being generated by a chemical or electrochemical reaction

Definitions

  • This invention relates generally to a self-generating gas pressure apparatus such as an expandable pouch means positionable in a container containing a fluid so as to provide pressure on the fluid so that it can be dispensed from the container, and in particular to a method for gas generation employing gas-producing chemical reactants provided with a nucleating agent to enhance the speed and maintenance of gas production and resultant pressure within the apparatus.
  • one compartment may contain citric acid, while the other compartment contains sodium bicarbonate.
  • these two compounds mix with each other, they react to produce carbon dioxide.
  • a trigger reaction is permitted to occur which subsequently causes the rupture of the seal which interface between the two adjacent compartments. This results in the mixture and reaction of the two compounds to produce a gas which expands the vessel to thereby apply pressure on the fluid within the container in which the expandable vessel i housed.
  • a novel self-generating pressure applying means is taught in co-pending and commonly-assigned U.S. Patent application Serial No. 034,900, filed April 6, 1987, incor- porated herein by reference.
  • gas pressure generation occurs as above describe and is generally adequate as long as sufficient time passes between individual dispensing procedures to thereby achieve pressure regeneration from continued chemical reaction
  • suc generation may not be rapid enough or sufficiently uniform to provide optimum pressure to the fluid to be dispensed from the containers during continued dispensing, resulting in a slow fluid flow from the container as the dispensing procedure continues.
  • Another object of the present invention is to provide apparatus wherein chemical compound which react with each other to produce gas react in the presence of a nucleating agent.
  • Yet another object of the present invention is to provide apparatus wherein caking the nucleating agent employed as well as production of a stable foam during reaction of the chemical compounds is retarded.
  • the subject of the present invention comprises a self-generating gas pressure apparatus, such as an expand- able closed vessel as exemplified by a pouch means, for placement within a container from which a fluid therein is to be dispensed under pressure.
  • the apparatus comprises a plurality of internal, sealed, respectively adjacent com ⁇ partments formed by respective interfacing seal means whic are rupturable under pressure and contain respective chemi cal compounds which when mixed upon the rupture of respec ⁇ tive interfacing seal means produce a gas.
  • first chemical compound in aqueous solution and a second chemical compound in aqueous solution which, when mixed together, produce a gas.
  • Two preferred reactants are citr acid and sodium bicarbonate which produce carbon dioxide.
  • At least one of the solutions additionally contains an insoluble nucleating agent physically characterized as lar surface-area particles preferably having a plurality of sharp edges. Diatomaceous earth exemplifies such particle
  • an anti-caking agent and an anti-foam agent ar also included in the solution containing the nucleating agent.
  • nucleating agent forces supersaturated gas out of the liquid phase and into the ga phase more quickly for more rapid and maintained equilibru conditions between the chemical compound reactants.
  • the more rapid gas pressure productio will act to rupture subsequent seals to adjacent reactant- containing compartments more quickly to thereby speed additional reactant mixing and consequent production of mo gas pressure more quickly. In this manner a greater pres ⁇ sure is generated and maintained more quickly to aid in effective continuous pressurized dispensing procedures.
  • Fig. 1 is a front elevational view with portions brok away illustrating an expandable pouch means and the compo ⁇ nents of a gas generating system
  • Fig. 2 is a cross-sectional view taken on the line 2- of Fig. 1;
  • Fig. 3 is a cross-sectional view of a partially expanded expandable pouch means
  • Fig. 4 is a cross-sectional view of a container for holding one component of a gas generating system
  • Fig. 5 is a cross-sectional view, except for the dispensing means, illustrating a container means and its supporting structure in an upright position for shipping commercial storage and a partially expanded expandable po means;
  • Fig. 6 is a view similar to Fig. 5 but with the con ⁇ tainer means in a dispensing position and after more than half of the fluid has been dispensed;
  • Fig. 7 is a view similar to Fig. 5 but after substa tially all of the fluid has been dispensed.
  • Fig. 8 is a graph which illustrates pressure generat profiles of gas-producing chemical reactants with and without a nucleating agent being present.
  • An expandable pouch means 2 of the presently preferr embodiment is illustrated in Figs. 1 - 3 and comprises tw relatively flat sheets 4 and 6 of a flexible plastic material in superposed relationship and made from a gas a liquid impermeable material such as a composite material an outside layer of a polyester with an inside coating of PVDC, a layer of polyethylene and a layer of an ionomer resin, such as that marketed by Dupont under the trade designation SURLYN .
  • a gas a liquid impermeable material such as a composite material an outside layer of a polyester with an inside coating of PVDC, a layer of polyethylene and a layer of an ionomer resin, such as that marketed by Dupont under the trade designation SURLYN .
  • Each of the flat sheets 4 and 6 is octagonal in shape having a length greater than its width and with peripheral edge portions 8 and 10 permanently joined together by a permanent sealing means 12 formed by heat sealing at a temperature of about 300°F for 0.5 seco
  • the expandable pouch 2 is formed into a first compartment and a plurality of other compartments 16 by a plurality of lengthwise extending strips 18 which join together opposed portions of the flat sheets 4 and 6 using a semipermanent pressure-rupturable sealing means 20 formed by heat sealin at a temperature of about 250°F for 0.5 second. If the fl sheets 4 and 6 are formed from different plastic materials the temperature and time would be adjusted as required to obtain the desired type of seal. Also, if desirable, a suitable adhesive could be used to obtain the desired results.
  • the normal operation of an expandable pouch means 2 uses some delaying system so that the chemical reaction ca be started and still allow for sufficient time for expand ⁇ able pouch means 2 to be inserted into the container means and suitable sealing and dispensing means applied to the container means.
  • the delaying system for this invention i illustrated in Fig. 1 wherein the first compartment is sub-divided to three sub-compartments 22, 24 and 26.
  • the sub-compartment 22 is formed by a lengthwise extending str 18, as described above, extending parallel to the next adjacent permanent lengthwise extending sealed edge portio 8 and 10.
  • the sub-compartments 24 and 26 are formed by a lengthwise extending strip 18, as described above, extendi parallel to and spaced inwardly from the strip 18 forming sub-compartment 22.
  • the lower portion 28 of the strip 18 forming the sub-compartments 24 and 26 has a reduced width for a purpose described below.
  • a quantity of a first chemical compound in aqueous solution, here a 50% citric acid solution 30, is contained in the sub-compartment 22.
  • tablet 32 comprising the second compound, here a concentrated sodium bicarbonate tablet, is contained in th sub-compartment 24.
  • An aqueous solution 34 of sodium bicarbonate additionally containing a nucleating agent comprising diatomaceous earth, a surfactant, and an anti- foam agent is contained in the sub-compartment 26.
  • the other compartments 16 each contain a quantity of the citr acid solution 30. It is to be understood, of course, tha other or additional chemical reactants can be employed as would be recognized by the skilled artisan to produce a desired gas end-product. In operation, a force is applied to the sub-compartme
  • the pressure within the first compartment 14 is increased so as to expand the portions of the flat shee 4 and 6 forming the first compartment 14.
  • the dispensing o fluid from the container means will provide space for further expansion of the expandable pouc means 2.
  • the limit of the volume of the first compar ment 14 is reached, further generation of carbon dioxide g therein will result in a force being applied to the strip between the first compartment 14 and the next adjacent oth compartment 16 so as to rupture such strip 18.
  • the citric acid solution 30 in the next adjacent other compartment 16 will contact the sodium bicarbonate solution 34 to continu the generation of carbon dioxide gas. This sequence will continue until the expandable pouch means 2 has been sub ⁇ stantially completely expanded.
  • the total amount of citri acid solution 30 in the entire pouch means 2 here exem ⁇ plified is 81.1 ml.
  • reactant quantities are, of course, chosen according to the volume of the pouch means 2 as well as th magnitude of chemical reaction desired.
  • FIG. 4 Another embodiment for the provision of the citric ac solution 30 in the first compartment 14 is illustrated in Fig. 4 and is particularly useful when the fluid in the container means is a carbonated beverage, such as beer.
  • a substantially rigid container 40 which in the preferred embodiment is plastic, has a closed end 42 and an open end 44.
  • the container 40 is illustrated as being a tube but i is to be understood that it can be of any desired geomet ⁇ rical configuration.
  • a barb 46 is secured to the inner surface 48 of the container 40 with its pointed end 50 facing and relatively close to the open end 44.
  • a quantit of the citric acid solution 30 is placed in the container and the open end 44 is sealed by a flexible membrane 52.
  • the strips 18 forming the sub-compartments 22, 24 and 26 not used in this modification so that the first compartme
  • the 14 is one unitary compartment.
  • the filled container 40 i contained in the first compartment 14 with the sodium bicarbonate solution 34.
  • the pressures generated by the carbonated beverage in the container mea will exert a pressure on the flexible membrane 52 moving into contact with the pointed end 50 to rupture the flexi membrane 52 and permit the citric acid solution 30 to flo into the sodium bicarbonate solution 34 in first compartme
  • FIG. 5 The location of the expandable pouch means 2 in a container means 60 is illustrated in Figs. 5 - 7.
  • Fig. 5 - 7 The location of the expandable pouch means 2 in a container means 60 is illustrated in Figs. 5 - 7.
  • Fig. 5 - 7 The location of the expandable pouch means 2 in a container means 60 is illustrated in Figs. 5 - 7.
  • the container means 60 is supported in the upright position for shipping and commercial storage by a support member 62.
  • the expandable pouch means 2 has a length substantially greater than the longitudinal extent of the container means 60 and a width substantially greater than the diameter of the container means 60. Therefore, in ord to insert the expandable pouch means 2 through an opening in the container means 60, it is necessary to apply a forc in a widthwise direction to compact the expandable pouch means 2 in that direction so that its cross-sectional configuration is less than the cross-sectional configurati of the opening 64. Also, as the expandable pouch means 2 inserted into the container means 60, it is necessary to apply a force in the lengthwise direction to push the expandable pouch means 2 into the container means 60.
  • the expandable pouch means 2 Thi results in a crumpling of the expandable pouch means 2 in the lengthwise direction. Since the material in the expand able pouch means 2 has little tendency to resile, it will remain crumpled while a dispensing means 66 for dispensing portions of the material in the container means 60 is assembled in the opening 64.
  • the fluid 68 such as a carbonated beverage such as beer, i in the container means 60 prior to the insertion of the expandable pouch means 2. If desired, the expandable pouch means 2 can be inserted into the container means 60 prior t the filling of it with the fluid.
  • the fluid level 70 is slightly below the dispensing means 66.
  • the strip 18 forming sub-compartment 22 is ruptured prior to the in ⁇ sertion of the expandable pouch means 2 into the container means .60 so that the gas generating system is in operation, as described above, and the first compartment 14 has been a least partially expanded in the illustration in Fig. 5.
  • Th container means 60 is illustrated in the fluid dispensable position in Figs. 6 and 7.
  • Another support member 72 has been previously secured to the container means 60.
  • the support member 62 and the support member 72 have planar surfaces 74 and 76 for supporting the container means 60 on a generally horizontal surface, such as a shelf of a home refrigerator.
  • the planar surfaces 74 and 76 also function to maintain the container means 60 in such fluid dispensabl position.
  • Fig. 6 more than half of the fluid has been dispensed fr the container means 60.
  • the first compartment 14 and several of the next adjacent other compartments 16 have b expanded, as described above, to form a combined compartm which is located adjacent to the upper longitudinally extending portion of the container means 60.
  • expandable pouch means 2 is substantially fully expanded is substantially completely in contact with the inner surface of the container means 60 except for the portion defining the opening 64.
  • a pres sure relieving device (not shown) in the dispensing means is actuated and the carbon dioxide gas in the expanded po means 2 is removed through the dispensing means 66 so that the container means 60 and the expandable pouch means 2 ar substantially at atmospheric pressure and the container means 60 can be safely placed in the trash.
  • the strips 18 are generally parallel with the longitudinal axis of container means 60 thereby achieve optimum positioning for fluid dispensing under pressure.
  • the relative length o the expandable pouch means 2 causes it to be crumpled as i is inserted into the container means 60.
  • the strips 18 still extend generally in the same direction as the longitudinal axis of the container means 60.
  • the expanded portion o the expandable pouch means 2 gradually moves into a positi wherein its longitudinal axis is parallel to the longitudinal axis of the container means 60, as illustrate in Fig. 6.
  • the longitudinal axes the expandable pouch means 2 and the container means 60 wi substantially coincide.
  • the container means 60 comprises a blown hollow integral plastic container means made of one piece of integrally molded plastic material, such as polyethylene terephthalate (PET) , and having a hemispherical top portion 78, an annular cylindrical centr portion 80, a hemispherical bottom portion 82 and a neck portion 84 defining the opening 64.
  • the container means 6 is large enough to hold 288 fluid ounces of a beverage.
  • the expandable pouch means 2 may be of any size and shape so as to be commensurate with the size and shape of the container means 60 with which it is to be used. Also, the expandable pouch means 2 may be used to dispense any kind of material from the container means as is customary this art.
  • the expandable pouch means 2 is designed for applying pressure to a quantity of beer equal to 288 fluid ounces or 2.25 gallons in a container means 60.
  • the expan able pouch means 2 exemplified is designed for such a container means wherein the container means 60 has an overall length along its longitudinal axis of about 15.5 inches, an external diameter of the cylindrical central portion 70 of about 9.0 inches, and an average wall thick ⁇ ness of about 0.030 inches.
  • the expandable pouch means 2 has an overall length of about 17 inches and an overall width of about 15.5 inches and has nine compartments form therein.
  • the first compartment 14 will expand to cause the rupturable seam strip 18 between it and the next adjacent other compartment to rupture.
  • the first compartment 14 o sub-compartment 26 contains 100 grams of sodium bicarbona which is more than the stochiometric amount necessary to react with the citric acid to produce the required pres ⁇ surizing gas, combined with 150 ml water, 10 g diatomaceo earth (Aqua Cell, manufactured by Manville Corporation) , ml surfactant (Dowfax 2A1, manufactured by Dow Chemical Co.), and 1 ml anti-foam agent (Dow-Corning Antifoam FG 1 manufactured by Dow-Corning Co.).
  • a surfactant is preferably included to inhibit caking of the nucleating agent, and can be chosen from any appropriate synthetic detergent or dispersing agent as would be recognized by th skilled artisan.
  • An anti-foam agent is preferably include to inhibit filling of the pouch means 2 with stable foam produced by the surfactant, and likewise can be chosen fro appropriate and recognized anti-foam agents.
  • the chemical compound reactants, nucleating agent, surfactant, and anti-foam agent all be acceptable f food contact or food grade if the fluid to be disposed fro the container in which the pouch means 2 is placed is to b drunk. This precaution is taken in the event the pouch means 2 accidently ruptures and the contents therein becom mixed with the fluid to be dispensed and consumed.
  • Fig. 8 graphically displays the average pressures present within the container 60 from several comparison tests between the presence and absence of diatomaceous earth, surfactant and anti-foam agent in the sodium bi ⁇ carbonate solution 34 of the pouch means 2 within the container 60 while beer is being essentially continuously dispensed from the container at the rate of about 250 ml p minute. All other conditions were held constant. As is evident from these results, the presence of the nucleating agent performed to maintain a higher pressure beginning at about two minutes into the dispensing procedure and con ⁇ tained for the duration of the time span exemplified.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

Un appareil à pression de gaz auto-générative, tel qu'une poche fermée expansible (2) est placé, dans un récipient (60) qui contient un fluide (68) et d'où ce fluide doit être distribué sous pression. L'appareil comporte plusieurs compartiments intérieurs (14, 16, 22, 24) qui sont formés par des joints d'étanchéité (20) cassables sous pression et qui contiennent des composés chimiques respectifs (30, 32, 34), lesquels produisent un gaz lorsqu'ils sont mélangés lors de la rupture des joints d'étanchéité de compartiments adjacents. Au moins l'un des composés chimiques logés adjacents contient en outre un agent de nucléation, tel que de la terre diatomacée, qui agit de façon à extraire plus rapidement de la solution le gaz produit dans la réaction des composés chimiques logés adjacents et à fournir ainsi plus rapidement une pression opérationnelle à l'appareil.
PCT/US1988/002356 1987-07-14 1988-07-13 Systeme generateur de pression pour un recipient jetable WO1989000537A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US073,756 1987-07-14
US07/073,756 US4785972A (en) 1987-07-14 1987-07-14 Pressure generating system for a disposable container

Publications (1)

Publication Number Publication Date
WO1989000537A1 true WO1989000537A1 (fr) 1989-01-26

Family

ID=22115631

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1988/002356 WO1989000537A1 (fr) 1987-07-14 1988-07-13 Systeme generateur de pression pour un recipient jetable

Country Status (5)

Country Link
US (1) US4785972A (fr)
EP (1) EP0376961A4 (fr)
JP (1) JPH02504254A (fr)
AU (1) AU2258488A (fr)
WO (1) WO1989000537A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240077A (en) * 1987-11-02 1991-07-24 Ron Liebermann Inflatable enclosure and means to inflate the same.
EP0441824A1 (fr) * 1988-11-03 1991-08-21 Adolph Coors Company Perfectionnements pour produire des pressions a l'interieur de conteneurs jetables

Families Citing this family (30)

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US4919310A (en) * 1989-03-02 1990-04-24 Adolph Coors Company Pressure generation system for a container
US5040704A (en) * 1990-01-26 1991-08-20 Ccl Industries, Inc. Method and apparatus for dispensing product from a product bag
US5398851A (en) * 1993-08-06 1995-03-21 River Medical, Inc. Liquid delivery device
US5398850A (en) * 1993-08-06 1995-03-21 River Medical, Inc. Gas delivery apparatus for infusion
US5571261A (en) * 1993-08-06 1996-11-05 River Medical, Inc Liquid delivery device
US5516004A (en) * 1994-06-23 1996-05-14 Quoin Industrial, Inc. Pressure regulator and amplifier
US5526957A (en) * 1994-06-23 1996-06-18 Insta-Foam Products, Inc. Multi-component dispenser with self-pressurization system
US5700245A (en) * 1995-07-13 1997-12-23 Winfield Medical Apparatus for the generation of gas pressure for controlled fluid delivery
US5769282A (en) * 1996-04-12 1998-06-23 Quoin Industrial, Inc. Pressure generation system for a container
US6283461B1 (en) 1997-06-20 2001-09-04 Ceramatec, Inc. Automatic cyclic fluid delivery device and associated process
US6164492A (en) * 1999-04-19 2000-12-26 Quoin Industrial, Inc. Readily deformable pressure system for dispensing fluid from a container
US6325255B1 (en) 2000-03-24 2001-12-04 Quoin Industrial, Inc. Apparatus and method for variably restricting flow in a pressurized dispensing system
US6244465B1 (en) 2000-06-27 2001-06-12 Quoin Industrial, Inc. Pressure system for dispensing fluid from a container
US8746503B2 (en) * 2004-06-12 2014-06-10 Walter K. Lim System and method for providing a reserve supply of gas in a pressurized container
DE202005004135U1 (de) * 2005-03-11 2005-05-19 Klocke Verpackungs-Service Gmbh Mehrkomponentenverpackung mit Applikator
US20090140006A1 (en) * 2007-03-09 2009-06-04 Vitantonio Marc L Beverage dispensing assembly
US20080217363A1 (en) * 2007-03-09 2008-09-11 Vitantonio Marc L Beverage dispensing assembly
US20090321443A1 (en) * 2007-03-09 2009-12-31 Taggart Jeffrey S Method for filling a vessel with a gas entrained beverage and a consumable consumer product including the beverage
US20090302038A1 (en) * 2007-03-09 2009-12-10 Taggart Jeffrey S Beverage Dispensing Assembly
US20080217362A1 (en) * 2007-03-09 2008-09-11 On Tap Llc Beverage dispensing assembly
US8070023B2 (en) * 2007-03-09 2011-12-06 On Tap Llc Beverage dispensing assembly
EP2258629B1 (fr) * 2009-06-05 2013-09-18 Eurokeg B.V. Conteneur pour boisson pressurisée, en particulier une bière, et procédé de remplissage d'un conteneur avec une boisson pressurisée
US9409698B2 (en) 2011-03-02 2016-08-09 Greenspense Ltd. Propellant-free pressurized material dispenser
US9758641B2 (en) 2011-07-11 2017-09-12 T.G.L. S.P. Industries Ltd. Nanoclay hybrids and elastomeric composites containing same
AU2013328883B2 (en) 2012-10-12 2018-08-02 Eli Lilly And Company Chemical engines and methods for their use, especially in the injection of highly viscous fluids
US9321581B2 (en) 2012-10-12 2016-04-26 Eli Lilly And Company Process and device for delivery of fluid by chemical reaction
EP2945983B1 (fr) 2013-01-16 2021-09-08 Greenspense Ltd. Composites élastomériques montrant une résistance et une flexibilité mécanique à long terme et appareils les comprenant
EP2945881B1 (fr) 2013-01-16 2020-08-26 Greenspense Ltd. Distributeur de matériau sous pression sans agent de propulsion
AU2018220724A1 (en) 2017-02-17 2019-07-11 Eli Lilly And Company Processes and devices for delivery of fluid by chemical reaction
WO2019050791A1 (fr) 2017-09-08 2019-03-14 Eli Lilly And Company Système de commande de la génération de gaz dans un dispositif d'administration de médicament

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US4679706A (en) * 1984-10-29 1987-07-14 Enviro-Spray Systems, Inc. Dispensing system with inflatable bag propelling mechanism and separate product gas phase

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US3718236A (en) * 1969-12-04 1973-02-27 E Reyner Pressurized container with non-rigid follower
US3861404A (en) * 1970-03-23 1975-01-21 Monsanto Chemicals Tobacco smoke filter
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US4478044A (en) * 1981-08-05 1984-10-23 Enviro-Spray Systems, Inc. Inflatable pouch and method of manufacture
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US4679706A (en) * 1984-10-29 1987-07-14 Enviro-Spray Systems, Inc. Dispensing system with inflatable bag propelling mechanism and separate product gas phase

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See also references of EP0376961A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240077A (en) * 1987-11-02 1991-07-24 Ron Liebermann Inflatable enclosure and means to inflate the same.
EP0441824A1 (fr) * 1988-11-03 1991-08-21 Adolph Coors Company Perfectionnements pour produire des pressions a l'interieur de conteneurs jetables
EP0441824A4 (en) * 1988-11-03 1991-10-16 Adolph Coors Company Improvements in generating pressures for disposable containers

Also Published As

Publication number Publication date
EP0376961A4 (en) 1990-11-28
AU2258488A (en) 1989-02-13
JPH02504254A (ja) 1990-12-06
US4785972A (en) 1988-11-22
EP0376961A1 (fr) 1990-07-11

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